/*
 * Copyright (c) 2004-2022, University of Oslo
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors 
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.hisp.dhis.validation;

import static org.hisp.dhis.system.deletion.DeletionVeto.ACCEPT;

import lombok.RequiredArgsConstructor;
import org.hisp.dhis.category.CategoryOptionCombo;
import org.hisp.dhis.organisationunit.OrganisationUnit;
import org.hisp.dhis.system.deletion.DeletionHandler;
import org.hisp.dhis.system.deletion.DeletionVeto;
import org.springframework.stereotype.Component;

/**
 * @author Stian Sandvold
 */
@Component
@RequiredArgsConstructor
public class ValidationResultDeletionHandler extends DeletionHandler {
  private static final DeletionVeto VETO = new DeletionVeto(ValidationResult.class);

  private final ValidationResultService validationResultService;

  @Override
  protected void register() {
    whenDeleting(ValidationRule.class, this::deleteValidationRule);
    whenDeleting(OrganisationUnit.class, this::deleteOrganisationUnit);
    whenDeleting(CategoryOptionCombo.class, this::deleteCategoryOptionCombo);
    whenVetoing(ValidationRule.class, this::allowDeleteValidationRule);
  }

  private void deleteValidationRule(ValidationRule validationRule) {
    validationResultService
        .getAllValidationResults()
        .forEach(
            validationResult -> {
              if (validationResult.getValidationRule().equals(validationRule)) {
                validationResultService.deleteValidationResult(validationResult);
              }
            });
  }

  private void deleteOrganisationUnit(OrganisationUnit organisationUnit) {
    validationResultService
        .getAllValidationResults()
        .forEach(
            validationResult -> {
              if (validationResult.getOrganisationUnit().equals(organisationUnit)) {
                validationResultService.deleteValidationResult(validationResult);
              }
            });
  }

  private void deleteCategoryOptionCombo(CategoryOptionCombo dataElementCategoryOptionCombo) {
    validationResultService
        .getAllValidationResults()
        .forEach(
            validationResult -> {
              if (validationResult
                  .getAttributeOptionCombo()
                  .equals(dataElementCategoryOptionCombo)) {
                validationResultService.deleteValidationResult(validationResult);
              }
            });
  }

  private DeletionVeto allowDeleteValidationRule(ValidationRule validationRule) {
    for (ValidationResult validationResult : validationResultService.getAllValidationResults()) {
      if (validationResult.getValidationRule().equals(validationRule)) {
        return VETO;
      }
    }

    return ACCEPT;
  }
}
